Finding the Fourth Proportional to 430.99, 642.21 and 410.07
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Solution
The fourth proportional to 430.99, 642.21 and 410.07 is: 611.03
Step by Step Solution
- Step 1: Write the proportion equation
430.99 : 642.21 = 410.07 : x - Step 2: Convert to fraction form
430.99/642.21 = 410.07/x - Step 3: Cross multiply
430.99x = 642.21 × 410.07 - Step 4: Simplify right side
430.99x = 263,351.44 - Step 5: Solve for x
x = 263,351.44/430.99 - Step 6: Final answer
x = 611.03
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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.